screenshot program

Plot is a scientific 2D plotting program.

Desktop synchronization program for efficient document management.

Music notation program.

Quilt-design program.

Industry standard CAD program.

Time Machine error-reporting program.

Personal finance and budgeting program.

Interactive plate-tectonics visualisation program.

Phone Disk is a tiny program which runs in the system tray of your Mac.

Mac-on-Linux is a Linux/PPC program that virtualizes MacOS or MacOSX in Linux.